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<h1 class="topictitle1">Configuring the DNS Service</h1>
<div id="body0000001219451936"><p id="EN-US_TOPIC_0000001839159813__p184331146490">After connecting the <span id="EN-US_TOPIC_0000001839159813__text103741358111512">OceanProtect</span> to the DNS server, external domain names can be resolved and accessed.</p>
<div class="section" id="EN-US_TOPIC_0000001839159813__section84408074710"><h4 class="sectiontitle">Prerequisites</h4><ul id="EN-US_TOPIC_0000001839159813__ul127106719472"><li id="EN-US_TOPIC_0000001839159813__li1591453144615">The DNS server has been configured and is running properly.</li><li id="EN-US_TOPIC_0000001839159813__li1171018715475">TCP/UDP port 53 between the <span id="EN-US_TOPIC_0000001839159813__text11398161191611">OceanProtect</span> and DNS server is enabled.</li></ul>
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<div class="section" id="EN-US_TOPIC_0000001839159813__section14363102215470"><h4 class="sectiontitle">Context</h4><ul id="EN-US_TOPIC_0000001839159813__ul11598536467"><li id="EN-US_TOPIC_0000001839159813__li1059953174610">A DNS server is used to resolve and access external domain names.</li><li id="EN-US_TOPIC_0000001839159813__li14591853134619">If you want to configure a standby DNS server, keep the domain names of the active and standby servers consistent.</li></ul>
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<div class="section" id="EN-US_TOPIC_0000001839159813__section177292329470"><h4 class="sectiontitle">Procedure</h4><ol id="EN-US_TOPIC_0000001839159813__ol69744384913"><li id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001607531760_en-us_topic_0000001311295305_en-us_topic_0000001149078659_li929117916361"><span>Choose <span class="uicontrol" id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_en-us_topic_0000001311295305_en-us_topic_0000001149078659_uicontrol1098185683619"><b><span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text157651936143415"><strong>System</strong></span> &gt; <span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text49601653123416"><strong>Infrastructure</strong></span> &gt; <span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text112401684352"><strong>Cluster Management</strong></span></b></span>.</span></li><li id="EN-US_TOPIC_0000001839159813__li19932939164117"><span>In the <span class="uicontrol" id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_uicontrol1050641575312"><b><span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text133861121163513"><strong>Local Cluster Nodes</strong></span></b></span> area of the <span class="uicontrol" id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_uicontrol13691645105219"><b><span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text1763193125313"><strong>Backup Cluster</strong></span></b></span> tab page, click the node name.</span></li><li id="EN-US_TOPIC_0000001839159813__li1115217015589"><span>In the <span class="uicontrol" id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_uicontrol1144724616332"><b><span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text51761646203516"><strong>Node detail</strong></span></b></span> dialog box that is displayed, click <span class="uicontrol" id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_uicontrol1544714611335"><b><span id="EN-US_TOPIC_0000001839159813__en-us_topic_0000001839143213_text1624910583612"><strong>Open the device management platform</strong></span></b></span> to go to DeviceManager.</span></li><li id="EN-US_TOPIC_0000001839159813__li9544194974714"><span>Choose <strong id="EN-US_TOPIC_0000001839159813__b8664115914915">Settings</strong> &gt; <strong id="EN-US_TOPIC_0000001839159813__b1566525918493">Basic Information</strong> &gt; <strong id="EN-US_TOPIC_0000001839159813__b466565913491">DNS Service</strong>.</span></li><li id="EN-US_TOPIC_0000001839159813__li1154414984718"><span>Click <strong id="EN-US_TOPIC_0000001839159813__b1680451297104927">Modify</strong> in the upper right corner of the <strong id="EN-US_TOPIC_0000001839159813__b1421787493104927">Management DNS</strong> area to configure the DNS service for the management plane.</span></li><li id="EN-US_TOPIC_0000001839159813__li1197583174919"><span>Set <strong id="EN-US_TOPIC_0000001839159813__b252114027104927">Active DNS IP Address</strong>.</span><p><ol type="a" id="EN-US_TOPIC_0000001839159813__ol097514364916"><li id="EN-US_TOPIC_0000001839159813__li1260165320466">(Optional) Set <strong id="EN-US_TOPIC_0000001839159813__b1660165344615">Standby DNS IP Address 1</strong>.</li><li id="EN-US_TOPIC_0000001839159813__li897518364913">(Optional) Set <strong id="EN-US_TOPIC_0000001839159813__b159751632497">Standby DNS IP Address 2</strong>. Set <strong id="EN-US_TOPIC_0000001839159813__b1698817341104927">Standby DNS IP Address 1</strong> first and then <strong id="EN-US_TOPIC_0000001839159813__b1218119624104927">Standby DNS IP Address 2</strong>.</li><li id="EN-US_TOPIC_0000001839159813__li196055344615">(Optional) Test the connectivity between the DNS server and the storage system.<ul id="EN-US_TOPIC_0000001839159813__ul11601253144617"><li id="EN-US_TOPIC_0000001839159813__li860185312461">You can click <strong id="EN-US_TOPIC_0000001839159813__b444506045104927">Test</strong> next to a DNS IP address to test its availability.</li><li id="EN-US_TOPIC_0000001839159813__li760253124620">You can click <strong id="EN-US_TOPIC_0000001839159813__b98240482304">Test All</strong> to test the connectivity between the DNS server and storage system.</li></ul>
</li><li id="EN-US_TOPIC_0000001839159813__li1460253164610">Click <strong id="EN-US_TOPIC_0000001839159813__b161585913104927">Save</strong>.</li></ol>
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